Main circuit design
Symmetrical double static contact design is adopted, and the product has double circuit conduction. At the same time, the rotating part is fastened at the position of non main electrical circuit, which ensures low temperature rise under normal operation. The components of the main conductive circuit, such as moving and stationary contacts and knife switch blades, are treated by copper silver plating process, which effectively enhances the conductivity of the product.
High voltage isolation switch ：www.zjgaobo.net
five 、 Terminal blocks
The standard double hole wiring copper bar is adopted, and the hole size and hole spacing of the copper bar comply with the general domestic custom, which is convenient for users to install.
six 、 Knife gate limiting device
It can enhance the stability during knife switch operation, and has ninety ° or one hundred and sixty ° Two limit modes. The default factory mode is one hundred and sixty °, if required ninety ° Limit or self adjustment without limit.
seven 、 Operating tab
Pull ring and rotary lock pin The lever design of is easy to open and improve the ice breaking capacity.
5、 Environmental conditions for use
one 、 Ambient air temperature: -40 ℃～ fifty-five ℃
two 、 Wind pressure: no more than 700Pa( Equivalent to wind speed 34m/S)
three 、 Altitude: no more than 2000m 。
6、 Main technical parameters
Insulator texture of material | epoxy resin | ceramics | silicon rubber |
Rated voltage (kV) | ten |
Rated current (A) | 200、400、630、1000、1250 |
Rated frequency (Hz) | 50Hz/60z |
Rated lightning impulse withstand voltage (kV) | To the ground | eighty-five |
fracture | ninety-five |
Rated power frequency withstand voltage (kV) | To the ground | thirty-eight |
fracture | forty-five |
Distance of isolated fracture | 300mm |
Rated short-time withstand current and duration (KA/S) | 25KA、20KA、16KA/4S |
Rated peak withstand current | 40KA |
Mechanical life | 2000 times |
Creepage distance of insulator | 410mm | 410mm | 520mm |
